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提出了基于最优插值和经验正交函数的水声环境快速重构方法,利用海表遥感数据、实测片段数据以及历史数据,实现了海洋环境剖面的实时重构。针对不同海区的水声传播特点,建立了基于波束位移射线简正波、广义相积分简正波和抛物方程理论的水声环境传播仿真模型。根据声速剖面特征和水声传播计算结果,建立了环境特征参数评估模型,有效提取了实际应用需要的环境特征量。在此基础上,构建了水声环境快速评估仿真系统,与现有海洋环境同化预报模式的延时预报相比,该方法在区域战场环境的实时分析评估以及硬件配置要求方面具有明显优势。实验结果验证了系统的有效性。
A fast reconstruction method of underwater acoustic environment based on optimal interpolation and empirical orthogonal function is proposed. Real-time reconstruction of ocean environment profile is achieved by using remote sensing data of sea surface, measured fragment data and historical data. According to the characteristics of underwater acoustic transmission in different sea areas, a simulation model of underwater acoustic environment propagation based on the theory of beam-shifted ray normal wave, generalized phase integral simple wave and parabolic equation was established. According to the characteristics of sound velocity profile and the calculation results of underwater acoustic propagation, an assessment model of environmental characteristic parameters was established, which effectively extracted the environmental characteristic quantities needed for practical application. On this basis, the simulation system for rapid assessment of underwater acoustic environment is constructed. Compared with the delay prediction of the assimilation and forecasting model of the existing marine environment, this method has obvious advantages in the real-time analysis and assessment of the regional battlefield environment and the hardware configuration requirements. The experimental results verify the effectiveness of the system.